US10390000B2 - Systems and methods for providing closed captioning in three-dimensional imagery - Google Patents
Systems and methods for providing closed captioning in three-dimensional imagery Download PDFInfo
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Definitions
- the following discussion generally relates to the presentation of closed caption information in displayed three-dimensional (3D) imagery.
- Closed captioning refers to any system that receives, formats, and displays text on a television or other display to thereby allow viewers to access additional or interpretive information about programming content. Closed captions generally display a transcription of the audio portion of a program as the program progresses, thereby allowing the hearing impaired and others to follow the program content without listening to the audio track associated with the programming.
- VBI vertical blanking interval
- ATSC ATSC
- ETA-708 ETA-708 format
- Other closed captioning formats or standards may be implemented in the United States or elsewhere.
- the closed caption text is provided with the programming content, and the receiver generates text that overlies the received imagery in a “scrolling”, “pop-on” or “paint-on” manner.
- Motion pictures, video disk (e.g., DVD) content, streamed audio/video, video games and the like may similarly incorporate closed captions using any number of standard or non-standard techniques.
- the programming includes closed caption (CC) information that includes caption data and a location identifier that specifies a location for the caption data within the 3D programming.
- CC closed caption
- the programming information is processed to render the caption data at the specified location and to present the programming on the display.
- a system for displaying three-dimensional programming suitably comprises a receiver interface and a processor.
- the receiver interface is configured to receive the three-dimensional programming, wherein the three-dimensional programming comprises closed caption information that includes caption data and a location identifier that specifies a location for the caption data within the three-dimensional programming.
- the processor is configured to render imagery corresponding to the three dimensional programming, wherein the imagery comprises the caption data rendered at the specified location within the three-dimensional programming.
- Still other embodiments relate to a method of producing three-dimensional programming.
- the method suitably comprises determining appropriate locations for presenting caption data within the three-dimensional programming, identifying each of the appropriate locations with a location identifier, and encoding closed caption information into the three-dimensional programming, wherein the closed caption information includes the caption data and the location identifier that specifies the appropriate location for the caption data within the three-dimensional programming.
- This method may be practiced during production or post-production of the programming itself, or prior to transmission of the programming on any sort of terrestrial broadcast, satellite, cable or other transmission medium.
- FIG. 1 is a block diagram of an exemplary system for providing closed caption information in three-dimensional (or pseudo-three-dimensional) programming;
- FIG. 2 is a diagram of an exemplary image that demonstrates occlusion of the caption box
- FIG. 3 is a diagram of an exemplary data structure suitable for carrying three-dimensional closed caption information
- FIG. 4 is a flowchart of an exemplary process for presenting three-dimensional programming that includes closed caption information
- FIG. 5 is a flowchart of an exemplary process for producing three-dimensional programming that includes closed caption information.
- closed caption information is provided in a three-dimensional (“3D” or “3-D”) programming stream in a manner that allows for presentation in a three-dimensional display.
- Information provided along with the closed caption text may include location information that specifies a suitable location for presenting the caption information in 3-D or pseudo-3D format.
- the location information may specify an anchor point or polygon in three-dimensional space, for example, that is suitable for displaying the closed caption text.
- the closed caption information can then be rendered and presented at the specified location on the display in a manner that accounts for user preferences (e.g., parallax settings, font size, color, transparency, and the like).
- various embodiments allow for additional features, such as image occlusion of the closed caption data. When used, occlusion of the closed caption data can result in new effects that enhance the perception of three dimensions.
- three-dimensional “3-D”, “3D” and the like are intended to be used interchangeably and to refer to any type of presentation or display that processes, displays, and/or otherwise accounts for imagery in more than two dimensions.
- Such displays may include so-called “pseudo-3d” displays that present imagery in a two-dimensional manner, but that are capable of rendering the two-dimensional images based upon underlying three-dimensional polygons, objects or other data.
- an exemplary system 100 for producing three-dimensional imagery having closed caption information suitably includes a production system 102 , a distribution system 104 , and a transmission system 106 as appropriate.
- Content once created, is provided to the viewer over any sort of broadcast or other distribution channel 108 for rendering at a media receiver 110 and playing on any sort display 120 .
- closed caption information 105 may be inserted into the programming at any stage of production 102 , distribution 104 and/or transmission 106 to allow closed captioning to be presented in a manner that effectively presents the caption data to be presented in a manner that preserves the 3-D effect.
- caption text is displayed within an object 122 that can be arranged on the display 120 so that other objects (e.g., actor object 124 , sword object 126 ) are presented around the caption object 122 in a 3-D (or pseudo-3D) manner.
- FIG. 1 shows a portion of sword object 126 occluding a portion of the caption object 122 , thereby giving the illusion that the sword 126 is “in front of” the caption text.
- Caption object 122 may be further positioned, sized and/or otherwise displayed in response to user settings or preferences, including preferences for parallax (e.g., distance between two stereoscopic images used to create the 3-D effect), font, text size and/or the like.
- the location of the caption object 122 may be variably and configurably located anywhere in three dimensional space presented on display 120 .
- the particular location of the caption object 122 may be defined in any manner.
- the caption object 122 is located based upon location information that is inserted into the programming data during production 102 , distribution 104 and/or transmission 106 of the program content.
- An author or producer may identify particular locations in two or three-dimensional space that could be appropriate for presenting caption data. These locations may be based upon then-current screen imagery, and may change as often as desired. Caption text may therefore be presented in different locations on display 120 as the programming progresses.
- Caption location identifiers may be encoded and presented to the receiver 110 in any manner.
- the closed caption information provided within the programming e.g., within the broadcast or network stream, or within encoded data stored on any media
- the location of object 122 may be defined in any manner.
- the location of the caption may be defined with regard to an anchor point, polygon and/or other reference in either or both images.
- a box or other polygon can communicate a location for presenting caption text, and depth information may be provided for imagery that contains the caption box.
- the polygon may be defined, for example, as being parallel to the display surface, although other embodiments may define the polygon in any other manner.
- separate depth information may be provided for rendering imagery when the caption box is not active.
- Production system 102 , distribution system 104 and transmission system 106 represent any system, device or organization capable of producing, distributing and/or transmitting program content, respectively.
- closed caption information 105 may be inserted into the programming content in any manner at any stage of production, distribution and/or transmission.
- caption information is encoded into the programming at the production stage, where an author, editor, producer or other party is capable of selecting one or more appropriate positions for the caption imagery 122 within the three-dimensional space presented by the program.
- Such information may be encoded into any sort of programming in any manner, such as during a conventional “post production” phase or the like.
- Insertion of caption information 105 during or just after production may be appropriate in any sort of programming, including cinema programming, television programming or any other programming that is delivered in any sort of standard format, such as any form of MPEG format that can be rendered by a player/receiver device 110 .
- caption information 105 may be added to programming during intermediate distribution (e.g., encoding or transcoding of programming that is stored onto DVDs or other portable media, or otherwise distributed to network affiliates, broadcasters and/or any other parties).
- caption information 105 may be inserted into the program stream just prior to broadcast or other transmission, much as current caption data is encoded in current two-dimensional broadcasts.
- distribution channel 108 may represent any sort of data link, broadcast or other wireless connection, physical media, and/or other avenue for delivering programming content.
- distribution channels include, without limitation, broadcast television, very small aperture terminal (VSAT) satellite (e.g., for movie distribution), direct broadcast satellite (DBS), cable television, cellular or other wireless telephone networks, Internet or other data communications networks, and/or the like.
- VSAT very small aperture terminal
- DBS direct broadcast satellite
- closed caption information 105 may be inserted into or otherwise encoded with programming content in any manner, and at any phase of production, post-production, distribution and/or delivery of the programming content.
- Receiver no is any device, component, circuitry or logic capable of receiving and processing programming content. As shown in FIG. 1 , receiver no includes a receiver interface 112 , a processor 116 with associated memory 118 , and a display interface 114 as appropriate. In various embodiments, receiver no is a conventional television receiver (e.g., a broadcast, satellite and/or cable television receiver) capable of receiving signals via distribution channel 108 and providing an output signal 115 that can be displayed to the viewer. In various embodiments, receiver no and display 120 make up a conventional television. In other embodiments, however, display 120 is any sort of television or other monitor that is capable of receiving a program signal 115 from a set-top box, decoder or other external receiver 110 as desired.
- a conventional television receiver e.g., a broadcast, satellite and/or cable television receiver
- receiver no and display 120 make up a conventional television.
- display 120 is any sort of television or other monitor that is capable of receiving a program signal 115 from a set-top box, decoder or
- Receiver 110 may be equivalently implemented as a DVD or other player that is capable of rendering content stored on any optical, magnetic and/or other portable media.
- receiver 110 is a media player capable of receiving media streams over a communications network (e.g., the Internet, a local or wide area network, and/or any sort of wireless telephony network).
- receiver 110 may be a software program that executes on conventional computer hardware, such as a personal computer, personal digital assistant, mobile telephone, video game player and/or the like.
- Receiver interface 112 is any hardware, firmware and/or software interface capable of receiving programming content.
- receiver interface implements a demodulator/decoder feature for receiving and demodulating digital television programming over a broadcast, satellite, and/or cable programming link.
- receiver interface 112 is a conventional network interface to a digital network such as the Internet, or any local area, telephone and/or other network having access to the Internet.
- receiver interface 112 may equivalently receive programming from a DVD or other portable media, or any other source as desired.
- many embodiments may also (or alternatively) provide a digital video recorder (DVR) or other recording feature that allows content to be stored for later viewing.
- DVR digital video recorder
- Such content may be stored with caption information 105 to allow for decoding and viewing of content text at the time that the programming stored on the recorder is rendered.
- Processor 116 is any sort of controller or the like that interacts with receiver interface 112 and display interface 114 to present imagery to the viewer on display 120 .
- Processor 116 may be implemented using any sort of microprocessor, microcontroller, digital signal processor or other logic capable of directing the actions and processes of receiver no.
- processor 116 will be associated with any sort of memory 118 , such as any sort of static, dynamic, flash or other memory capable of storing programming instructions and/or data for processing by processor 116 .
- receiver 110 is based upon a “system on chip” (SoC) implementation that incorporates a hybrid microcontroller 116 with memory 118 , input/output and/or other features to perform the various signal processing and other actions of receiver no.
- SoC system on chip
- processor 116 and/or memory 118 may implement processor 116 and/or memory 118 using any sort of application specific integrated circuit (ASIC) or the like.
- ASIC application specific integrated circuit
- Still other embodiments may implement processor 116 and/or the other features of receiver 110 with any number of discrete and/or integrated processing components (e.g., any sort of microprocessor or microcontroller), memories 118 , input/output features and/or other features as desired.
- Display interface 114 is any physical and/or logical interface to display 120 .
- receiver no and display 120 are provided in an integrated product (e.g., a conventional television).
- receiver no provides video output signals 115 to an external display 104
- signals 115 may be provided in any compatible format.
- display interface 114 may provide video output signals 115 in any conventional format, such as component video, composite video, S-video, High-Definition Multimedia Interface (HDMI, e.g, any version of the CEA-861 standards), Digital Visual Interface (DVI), IEEE 1394, and/or any other formats as desired.
- HDMI High-Definition Multimedia Interface
- DVI Digital Visual Interface
- Display 120 is any sort of television, monitor and/or other display capable of presenting 3D or pseudo-3D imagery to a viewer.
- display 120 operates in conjunction with receiver 110 to generate 3D imagery in any manner.
- 3-D display technologies include, without limitation, any sort of display based upon interlaced images (e.g., using horizontal, vertical, checkerboard and/or other interlacing), images provided in combination with any sort of depth map, stereo imagery, and/or the like.
- Such imagery may be viewed using any sort of anaglyphic techniques, or any sort of viewing techniques that make use of polarized filters, wavelength multiplexing, field sequential viewing, lenticular screens, parallax barriers and/or the like.
- receiver 110 suitably receives 3-D type programming in any format or medium.
- the programming may be received at interface 112 from any broadcast or other transmission source, from any sort of streaming or portable media, and/or any other distribution channel 108 .
- the 3-D programming is provided with caption information that includes caption text as well as location identifier information that identifies a location in three-dimensional space that is suitable for presenting the caption text. This information may be extracted from the programming stream in any manner, and may be further processed in conjunction with any user preference or other information to generate suitable imagery on display 120 .
- receiver 110 is able to process occlusion of the caption object 122 so that other objects within display 120 appear to be “in front of” the caption object, as appropriate.
- the location of the caption object 122 may be rendered in a manner consistent with user parallax and/or other settings, as described more fully below.
- FIG. 2 is a diagram showing an exemplary display 120 that is presenting a program that includes various programming objects.
- two character objects 124 A-B representing actors or actresses are engaged in a dual using swords 126 A-B.
- objects 124 A-B and/or 126 A-B may at times occlude caption object 122 , thereby giving the impression to the viewer that the occluding object is in front of the caption object 122 .
- This may be accomplished in any manner; in various embodiments, each of the objects 124 A-B, 126 A-B and 122 are described with respect to any sort of three-dimensional coordinate system.
- Objects are therefore rendered in their assigned three-dimensional space, with objects “in front” occluding objects behind.
- sword object 126 B is shown “in front of” caption object 122 , with objects 124 A-B and 126 A shown “behind” caption object 122 .
- Object 126 B in this example therefore occludes a portion of object 122
- object 122 occludes portions of objects 124 A-B and 126 A, as shown.
- Similar concepts could be applied to any number or types of objects. That is, by defining a caption text object 122 with respect to other objects in the display 120 , the object 122 can be placed at an appropriate location in three-dimensional space to allow effective viewing.
- caption object 122 may be configured in any manner, and may change throughout the duration of the program.
- FIG. 2 shows caption object 122 as being presented in a relatively “front and center” manner that overlies the primary objects in the display, captions could alternately be presented in other locations, such as locations 202 and/or 204 .
- Caption data could be presented in a manner that spatially associates an actor object 124 A-B with dialog spoken by the actor, for example. That is, dialog presented by actor object 124 A could be presented area 202 , while dialog from actor object 124 B could be presented in area 204 , as desired.
- Such dialog could be presented in a manner that simulates dialog boxes (e.g., comic-book type “balloons”) or the like.
- FIGS. 1 and 2 show caption object 122 as a box that occludes other objects located behind the object 122 in three-dimensional space
- Object 122 need not be a solid object that occludes objects behind it; to the contrary, object 122 may be relatively transparent to minimize occlusion.
- the caption text may be presented as overlying some or all of the other imagery, with the remainder of object 122 being opaque or transparent to the viewer.
- the object 122 itself may be dimensioned and shaped in any other manner.
- FIGS. 1 and 2 show object 122 as a rectangular box, object 122 may be equivalently presented as any regular or irregular shape (e.g., the dialog “balloons” referenced above) on display 120 .
- the particular locations for the caption object(s) 122 may be determined by any party using any technique.
- an author, editor, producer or other party is able to define the locations during production of the program. This definition may be accomplished using editing software executing on a digital computer, or in any other manner.
- the location(s) for presenting caption text may be defined based upon an average parallax value or other parameter related to the displayed imagery.
- An average parallax setting could be calculated (e.g., using any sort of weighted or non-weighted averaging technique) during production, post-production or at any other point in time, with captions placed relative to the average parallax of the imagery as appropriate.
- Parallax averaging may be dynamically performed in the receiver as well, with caption data placed as appropriate.
- an exemplary data structure 300 for providing television or other programming suitably includes space 304 for program data, as well as any sort of data field 302 that includes closed caption information 306 as appropriate. Closed caption information 306 may include timing information 308 , location information 310 and/or caption text 312 as appropriate.
- Data field 302 may be incorporated within an MPEG-defined or other header, for example, or any other data field or location as desired.
- closed caption information 306 is provided as an ancillary or other programming stream within an MPEG multiplex or the like, although such information could be equivalently encoded into the same programming stream as the primary video imagery (e.g., with three dimensional information encoded in the program stream) or in any other related location or reasonable position.
- closed caption information may be associated with a program clock reference (PCR) or other time identifier 308 that allows for coordination of caption text 312 with dialog and/or other action within the program.
- PCR program clock reference
- Location information 310 may be defined in any manner, depending upon the type of imagery presented within the program data 304 .
- location information 310 may simply describe an anchor position in three-dimensional or pseudo-3D space. That is, information 310 may define a planar region or other two or three dimensional polygon suitable for presenting caption text 312 . This polygon may be defined with respect to a single point, or any number of points. A single point, for example, could define a corner, center point or other reference, with the remainder of the polygon being defined by the content of caption text 312 , and/or any number of default values.
- the size of a polygon may be defined to provide just enough space for presentation of the particular caption text 312 , for example, with the size varying in response to the amount of text 312 presented at any given time.
- multiple points could define opposing corners, center points, sides and/or other points of a regularly-shaped polygon in any manner.
- three points could define a planar or other region suitable for presenting caption text 312 on display 120 .
- Each of the various points may be defined in any manner, for example with respect to pixels in display 120 and/or any other type of absolute and/or relative coordinates using any reference or point of origin as desired.
- caption location information 310 could define a polygon or other bounding object in any manner. Location information 310 could further include depth map information that describes imagery both when caption object 122 is active, and when captioning is inactive to allow for correct spatial rendering of the various objects in the programming stream 304 in either event. Again, location information 310 may define the location for presenting caption text 312 in any manner, using any sort of format or structure as appropriate for the particular embodiment.
- Two or more sets of caption data 306 could be provided, for example, to accommodate captions in multiple languages or other formats. Because each set of caption data 306 could have its own location information 310 , captions could be displayed in different locations depending upon the set of data 306 selected by the viewer. This feature may be useful in accommodating language with different character sets, for example, or languages such as Japanese, Hebrew, Arabic or the like that are most conveniently viewed in a vertical manner, or in a different spatial manner than other languages. That is, a set of English captions could be presented at the bottom and center of display 120 , whereas captions in vertical languages may be presented toward the left or right edges of display 120 , as desired.
- Two-dimensional displays may therefore make some use of the spatial information 310 contained within the caption data 306 even though such displays may not necessarily render imagery in three dimensions.
- an exemplary method 400 for presenting 3D programming that includes closed caption information suitably includes the broad functions of receiving the programming (function 402 ), obtaining closed caption information that includes caption data and a location identifier that specifies a location for the caption data within the three-dimensional programming (function 406 ), and rendering the imagery on display 120 as appropriate (function 414 ).
- Other embodiments may additionally process occlusion of objects (functions 410 , 412 ) and/or may determine the particular location of the caption information on display 120 (function 408 ) using user preference and/or other information as appropriate.
- functions and other features may also be provided, as described in increasing detail below.
- method 400 may be carried out with any sort of hardware, software and/or firmware logic that is stored and/or executed on any platform. Some or all of method 400 may be carried out, for example, by logic executing within receiver 110 in FIG. 1 .
- processor 116 executes software logic that performs each of the various functions shown in FIG. 4 . Such logic may be stored in memory 118 or in any other storage available to processor 116 as desired.
- the particular logic and hardware that implements any of the various functions shown in FIG. 4 may vary from context to context, implementation to implementation, and embodiment to embodiment in accordance with the various features, scenarios and structures set forth herein.
- processing hardware may include processor 116 or other components of receiver no in FIG. 1 , as well as any other processors or other components associated with any conventional television, receiver, media player and/or the like.
- Programming may be received in any manner (function 402 ).
- various embodiments may process broadcast signals, including signals received from any sort of terrestrial, satellite and/or cable broadcast.
- Other embodiments may process programming stored on a portable media, or any sort of streaming or file-based media received from any source.
- Programming is received at receiver 110 as appropriate (e.g., at receiver interface 112 ) to allow subsequent processing and rendering of 3D imagery on display 120 .
- Various embodiments may process closed caption features in a modal or similar manner (function 404 ). That is, closed captions may be shown in one mode but not in another. Captioning may be activated or deactivated by the viewer in any conventional manner.
- the program information is suitably received with caption information 306 that includes both caption text 312 and caption location information 310 (function 406 ).
- receiver 110 suitably extracts and processes the caption information 306 to display the closed caption text in the desired manner.
- Such information may be extracted from a data structure 300 or other stream used to transport the program content 304 , as described above.
- Such information may be extracted, decoded and/or otherwise processed using conventional MPEG or other decoding techniques, as appropriate.
- the position of the closed caption information is determined in any suitable manner (function 408 ).
- a caption object 122 is at least partially defined by location identifier information 310 contained within caption data 306 .
- captions may be provided in a planar or other region that may be defined in any manner. Alternatively, captions may be provided relative to a particular planar or other region within the imagery. In either case, the particular location of the region may or may not be parallel to the display surface. This position may be further modified in response to user preference information and/or other factors as appropriate.
- the basic position information contained within the caption information 306 may be adjusted in response to image occlusion, parallax settings, viewer location, equipment used, average depth of the 3D image, the dynamic content itself, other user preferences and/or the like, to name just a few examples.
- User information may be entered using any interface, for example, and may be stored in memory 118 or elsewhere.
- the position of a caption object 122 or the like could be adjusted in response to a parallax setting made by the user that affects the distance between two stereoscopic images provided on a 3D display 120 .
- a parallax setting made by the user that affects the distance between two stereoscopic images provided on a 3D display 120 .
- many 3D displays may provide a configurable parallax setting that can be adjusted by the viewer.
- Various other types of “3D” settings could provide equivalent features.
- any 3D-type adjustments or settings made by the viewer can be considered to be equivalent to the parallax setting described herein in that such settings can be mathematically correlated to absolute or relative adjustments to object positions based upon the average parallax of the imagery.
- Such settings can be further used to adjust the position of the caption object 122 used to present caption text.
- Various embodiments are able to determine an average parallax of the displayed imagery and to adjust the position of the caption text relative to the average parallax as desired. For example, if the object 122 is located away from the centerline of the display 120 , the displacement from the centerline may be increased as the parallax setting is increased. Conversely, the position may be moved closer to the centerline of display 120 as parallax is decreased. In other embodiments, the apparent position of object 122 may be maintained in place, but the relative positions of stereoscopic images may be moved further apart based upon the parallax setting, thereby allowing for an improved viewer experience.
- the relative distance adjustment applied in response to the parallax setting may be defined according to any linear or non-linear function, as desired.
- Other embodiments may similarly adjust the position and/or size of caption object 122 based upon other factors in addition to or in place of the parallax setting. If display 120 is an unusual shape or size, for example, adjustments could be made to the particular position specified in information 306 to allow for improved viewing on the particular equipment that is available. Other options that may be considered include the font type or size selected by the viewer, color settings and/or any other parameters that may be set by viewers or others as appropriate. The general information provided by the program author/producer, then, can be enhanced, modified or overridden by viewer preferences in various embodiments.
- caption object 122 is defined in three-dimensional space in a manner that allows other options to be located “in front of” or “behind” the object 122 from the viewer's point of view. Objects in front of other objects can occlude, or block, some or all of the imagery located behind the occluding objects, as described above. In various embodiments, caption object 122 is simply defined in the same manner as any other three-dimensional object presented on display 120 , with occlusion processed using conventional photogrammetry techniques. That is, using the various measurement data available of the various objects presented on display 120 , a 3-D or similar image can be constructed on the display that presents closed caption information in an integral manner.
- Processed imagery may be rendered in any manner (function 414 ).
- imagery is provided from a set-top box, media player other receiver 110 to an external display 120 using any sort of interface 114 (e.g., an HDMI interface).
- interface 114 simply represents any signal generation feature capable of driving an integrated display 120 .
- the functions of receiver 110 and display 120 may be integrated into a common device. Rendering of imagery for presentation on display 120 may therefore involve any sort of decoding, image processing, image rendering, decompression and/or other features commonly associated with conventional media processing.
- FIG. 5 shows an exemplary process 500 for producing 3D programming that includes the broad steps of generating 3D content (function 502 ), determining locations for caption data (function 504 ), identifying and encoding the location information (functions 506 , 508 ), and distributing the encoded programming as desired (function 510 ).
- Process 500 may be partially or entirely performed on any sort of digital computer executing any sort of software, as appropriate. As noted above, process 500 may be performed during production, distribution and/or transmission of the program content.
- Generating content suitably includes producing 3D-type content in any manner.
- Content may be produced from a live camera feed, for example, or from any conventional television, cinema or other media production techniques. Captured imagery may be produced in any manner to create an edited program product that, in turn, may be produced for distribution on any broadcast, cinema, streaming or stored media.
- the produced content may be represented in any digital or other format that can be stored on a digital media (e.g., memory or hard drive) and that can be partially or wholly loaded into an editing program for subsequent processing.
- the function 502 of generating content then, may equivalently refer to loading produced content into a digital editing system or the like.
- Locations for captions may be determined in any manner (function 504 ).
- editing software displays the produced content and allows an editor or producer to select portions of the on-screen display that are suitable for content presentation. Such portions may be selected using any sort of selection or drawing tools, including any sort of mouse-driven or similar tools based upon graphical user input.
- the locations of the captions may be assigned in response to average parallax and/or other factors as appropriate. As an example, the encoding system could determine the average parallax of the displayed imagery, and select locations for presenting caption data relative to the calculated average parallax.
- Location identifiers may relate to absolute or relative coordinates within the imagery, for example, or may simply define a spatial object with appropriate depth information or the like. Identifiers may be created in any format that is capable of being decoded by receiver no.
- caption location identifiers may be encoded into the programming stream in any manner.
- the encoded programming stream may be transmitted or otherwise distributed for subsequent viewing in any manner.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
- Processing Or Creating Images (AREA)
Abstract
Description
Claims (19)
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US20160182878A1 (en) | 2016-06-23 |
AU2010208541A1 (en) | 2011-07-28 |
EP2392133A1 (en) | 2011-12-07 |
CA2750615A1 (en) | 2010-08-05 |
EP2392133B1 (en) | 2017-03-01 |
US20130002833A1 (en) | 2013-01-03 |
JP5321694B2 (en) | 2013-10-23 |
AU2010208541B2 (en) | 2014-05-08 |
IL213941A (en) | 2016-02-29 |
MX2011007249A (en) | 2011-08-03 |
KR20110112823A (en) | 2011-10-13 |
US9300894B2 (en) | 2016-03-29 |
BRPI1007396A2 (en) | 2016-02-16 |
US20100188572A1 (en) | 2010-07-29 |
US8269821B2 (en) | 2012-09-18 |
JP2012516505A (en) | 2012-07-19 |
SG173136A1 (en) | 2011-08-29 |
CA2750615C (en) | 2015-05-26 |
TWI445405B (en) | 2014-07-11 |
CN102292977B (en) | 2014-06-18 |
MY154094A (en) | 2015-04-30 |
KR101289542B1 (en) | 2013-07-24 |
IL213941A0 (en) | 2011-07-31 |
TW201036437A (en) | 2010-10-01 |
CN102292977A (en) | 2011-12-21 |
WO2010088070A1 (en) | 2010-08-05 |
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